Fast forward three weeks, 2000 miles and here we are (will post more phtos later). The whining got even more severe, it became hard to engage gears (particularly third and second), and when coming off power, an awful shuddering appeared. Car is now basically undriveable. Pulled the mag plug again and another christmas tree has appeared, shards of metal even in the oil.

So it looks like I am needing a new gearbox. Anyone happen to have one? I am working in Reading at the moment, but am travelling to Yorkshire every weekend, so I can probably pick it up from anywhere between London, Birmingham and Newcastle. Cash waiting of course.
p155 right off, because apart from this, the car has been performing faultlessly, coping well with the M25 rush hour and the twice-weekly wacky racers up and down the M1.